SEGMENT INFORMATION - Schedule of Total Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018
Items excluded from segment assets:
Deferred tax assets	$ 91,772	$ 77,545
Total Consolidated Assets	2,723,235	$ 2,760,727	$ 2,745,928
Corporate Reconciling Items and Eliminations
Items excluded from segment assets:
Cash, restricted cash and other investments	104,344		275,377
Deferred tax assets	91,772		72,120
Reportable Segments | Operating Segments
Items excluded from segment assets:
Total Consolidated Assets	2,014,381		1,891,606
All Other Segments | Operating Segments
Items excluded from segment assets:
Total Consolidated Assets	$ 512,738		$ 506,825